def get_control_by_type(param):
if isinstance(param, tuple):
options = param[1:]
param = param[0]
else:
options = ()
if param == 'str':
result = QLineEdit()
if 'pwd' in options:
result.setEchoMode(QLineEdit.Password)
if 'optional' in options:
result.setPlaceholderText('(Optional)')
elif param == 'big_str':
result = QPlainTextEdit()
elif param == 'label':
result = QLabel()
if 'url' in options:
result.setTextFormat(Qt.RichText)
result.setTextInteractionFlags(Qt.TextBrowserInteraction)
result.setOpenExternalLinks(True)
elif param == 'checkbox':
result = QCheckBox()
else:
raise RuntimeError()
return result
